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Investment Securities - Summary of Amortized Cost and Fair Value by Contractual Maturity (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Investments, Debt and Equity Securities [Abstract] |  |
Amortized Cost, 1 year or less | $ 8,093 |
Amortized Cost, Due after one year through five years | 12,154 |
Amortized Cost, Due after five years through ten years | 19,812 |
Amortized Cost, Due after ten years | 27,845 |
Amortized Cost, Mortgage-backed securities and Collateralized Mortgage Obligations | 50,795 |
Amortized Cost, Other securities | 1,673 |
Amortized Cost | 120,372 | $ 86,920
Fair Value, 1 year or less | 8,160 |
Fair Value, Due after one year through five years | 12,186 |
Fair Value, Due after five years through ten years | 19,248 |
Fair Value, Due after ten years | 25,993 |
Fair Value, Mortgage-backed securities and Collateralized Mortgage Obligations | 48,181 |
Fair Value, Other securities | 1,722 |
Fair Value | 115,490 | 78,813
Held to Maturity Securities Amortized Cost, 1 year or less | 0 |
Held to Maturity Securities Amortized Cost, Due after one year through five years | 6,000 |
Held to Maturity Securities Amortized Cost, Due after five years through ten years | 9,000 |
Held to Maturity Securities Amortized Cost, Due after ten year | 0 |
Mortgage-backed securities and Collateralized mortgage obligations | 21,735 |
Held To Maturity Other securities Amortized Cost | 0 |
Held-to-Maturity, Amortized Cost | 36,735 | 31,822
Held to Maturity Securities Fair Value, 1 year or less | 0 |
Held to Maturity Securities Fair Value, Due after one year through five years | 5,795 |
Held to Maturity Securities Fair Value, Due after five years through ten years | 7,613 |
Held to Maturity Securities Fair Value, Due after ten years | 0 |
Mortgage-backed securities and Collateralized mortgage obligations | 20,828 |
Held To Maturity Other securities Fair Value | 0 |
Held-to-maturity, Fair Value | $ 34,236 | $ 30,080

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